import java.sql.ResultSet;
import java.sql.SQLException;

public class five {

    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        sqlhelper.register_drive("com.mysql.cj.jdbc.Driver");
        sqlhelper.connect("jdbc:mysql://localhost:3306/testDB?serverTimezone=GMT&useSSL=false", "root", "123456");
        sqlhelper.close_commit();
        // insert into tb_user (name, password) values (?, ?)


        sqlhelper.commit();
        sqlhelper.close();
    }

}
